Gokayama
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Gokayama completed
Particulars
Owner: unknown
Designer: Crearia Inc.
Contractor: Kajima Corp., Tobishima and Matsumoto JV
Statistics
Type: Gravity
Purpose(s): Flood Control / Navigation / Water Supply
Reservoir capacity: 40 m3x106
Height: 103 metres
Length: 556 metres
Volume of RCC: 634 m3x103
Total volume: 935 m3x103
Construction Dates
Start of Project: 06/12 (June 2012)
Start of RCC: 06/14 (June 2014)
End of RCC: 07/15 (July 2015)
End of Project: 03/18 (March 2018)
Country: Japan
River: Naka
DMS Co-ordinates: 33˚24'48.57"N, 130˚25'6.34"E
DD Co-ordinates: 33.41349, 130.418427
Facings
Upstream
| Slope | Type |
|---|---|
| Vertical | Traditional concrete against formwork |
| 1.00 | Traditional concrete against formwork |
Downstream
| Slope | Type |
|---|---|
| 0.76 | Traditional concrete against formwork |
Spillway
| Slope | Type |
|---|---|
| 0.76 | Traditional concrete against formwork |
Placement
| Layers (mm) | Lifts (mm) |
|---|---|
| 250 | 1000 |
Cementitious material
| Cement (kg/m3) |
|---|
| 104 |
| Pozzolan (kg/m3) | Pozzolan Type |
|---|---|
| 26 | Low-lime flyash (ASTM Class F) |
